A5021742545- Ruminant Nutrition and Digestive Physiology
- Turfgrass Adaptation and Management
- Plant and fungal interactions
- Genetic and phenotypic traits in livestock
- Reproductive Physiology in Livestock
- Bioenergy crop production and management
- Crop Yield and Soil Fertility
- Soil Carbon and Nitrogen Dynamics
- Agroforestry and silvopastoral systems
- Soil and Water Nutrient Dynamics
- Botanical Research and Chemistry
- Effects of Environmental Stressors on Livestock
- Rangeland and Wildlife Management
- Agriculture, Soil, Plant Science
- Agronomic Practices and Intercropping Systems
- Meat and Animal Product Quality
- Agriculture Sustainability and Environmental Impact
- Agricultural Engineering and Mechanization
- Animal Behavior and Welfare Studies
- Agricultural Productivity and Crop Improvement
- Agriculture and Farm Safety
- Horticultural and Viticultural Research
- Food composition and properties
- Plant Toxicity and Pharmacological Properties
- Pasture and Agricultural Systems
Dairy Management
2012-2023
U.S. Dairy Forage Research Center
2013-2022
Agricultural Research Service
2011-2022
United States Department of Agriculture
2009-2014
University of Arkansas at Fayetteville
1999-2013
University of Wisconsin–Madison
2007
Kansas State University
1993-1998
Arkansas Agricultural Experiment Station
1993
Throughout the Southern Great Plains, wheat is managed frequently as a dual-purpose crop, but this production paradigm not necessarily applicable throughout other regions of United States, and wider array management options can be considered for forage-only uses cereal grains. Our objectives were to assess fall-growth potential (Triticum aestivum L.), triticale (X Triticosecale Wittmack), oat (Avena sativa L.) cultivars in Wisconsin, then further evaluate compare fiber composition TDN these...
Two complementary experiments were completed to assess short-term foraging dynamics, diet quality, and ruminal degradation kinetics of herbage consumed by steers with 3 levels depletion. Experiment 1 was a behavioral study in which 2 ruminally cannulated allocated grazing scenarios simulating These treatments included an ungrazed sward (control), as well medium high Grazing sampled for surface height amount green leaf stem before being grazed. Foraging dynamics determined through...
The objective of the present experiment was to describe sward canopy structures 3 different wheat (Triticum aestivum L.) pastures and relate them short-term herbage intake rate foraging dynamics by steers. Pastures were sampled for leaf stem fractions at bottom, middle, top strata. Sward surface heights tiller bulk densities measured. Herbage separated into leaf, leaves then ranked phenologically. Three steers grazed (grazing sessions) in a Latin square design. Ruminal contents emptied...
Decreased lignin concentration or decreased ferulate cross‐linking between arabinoxylans and are two mechanisms to increase cell‐wall digestibility in plants. The objectives of this study were (i) determine the consistency clonal repeatability etherified ferulates across multiple harvest dates years, (ii) if genetic correlation can be altered by intensive selection, (iii) effects on neutral detergent fiber (NDF). Thirty clones each smooth bromegrass ( Bromus inermis Leyss), orchardgrass...
Conserving hay at moisture concentrations >200 g kg −1 is known to cause spontaneous heating and negative effects on forage nutritive value. While these relationships have been evaluated extensively for alfalfa ( Medicago sativa L.), less research has factors in warm‐season grasses, specifically bermudagrass [ Cynodon dactylon (L.) Pers.]. In this study, ‘Greenfield’ was grown a Pickwick silt loam soil (fine‐silty, mixed, semiactive, thermic Typic Paleudult) packaged conventional...
Data from 69,145 Holstein cows that calved in 2005 were evaluated to determine the influence of age at first calving (AFC) on lactation and lifetime production commercial dairy herds. A DHI database was divided into 4 herd management criteria (HMC). The HMC 1) 3X milking rolling average (RHA) = 12,750 kg (3X-H), 2) RHA 11,250 (3X-M), 3) 2X (2X-M), 4) 9,250 (2X-L). For all HMC, a universal loss first-lactation milk, fat, protein yield observed when AFC <23 mo. Compared with 24 mo, milk...
Shrink is a normal occurrence in cattle that affects both the seller and buyer; few hours to over 30 d are required replenish this lost BW. The primary factor affecting shrink length of time feed water withdrawal; rate averages ca. 1%/h during initial 3 4 h, but decreases as low 0.1%/h after 10 h or more. not only loss gut fill actual tissue loss, which can exceed 60% total BW loss. This amount greater when ambient temperatures high. Many other factors also affect incur. may be increased by...